Weak current College】 【how to select a network video server methods】.

<br> <br> 1. product availability related qualification product qualification does not fully represent the product quality and performance, but many systems integration project acceptance of basic conditions, but also whether or not a product. 2. the product Admin software intellectual property .protection whenever network video server products, must have a matching background monitoring and management software. Due to current market a large number of OEM products and illegal counterfeit products, providing customers caught off guard. Hardware devices can be imitated, software can copy. While the .original manufacturers in order to prevent illegal copies of software, usually set a trap, the software and you've become the innocent victim. Therefore, products supporting the background monitoring management software is the intellectual property that will be the customer's important standard to judge the .product. 3. shipping standard real-time activity images of actual bandwidth requirements this is a measure of network video server is an important indicator of the overall performance. High bandwidth means that network usage costs increase, to the end user is concerned, this will .undermine their digital monitor mode will, after all, the economy is any business units had to consider the issue. Because of the different images (still and normal activities, high-speed movement), image resolution, the number of frames transferred images, which .consume network bandwidth varies greatly, so many network video server manufacturers in the recommended product, always trying to trying to blur this indicator. To do this, we can set up a unified image of the State, either for the normal activities of the image, .the image resolution 352 × 288, reached the number of frames to 25 frames / sec, 1-channel video image takes up network bandwidth. It is understood, including Taiwan, Korea of a considerable number of manufacturers of products for bandwidth requirements between 500 - .600K, some even call 800-900K. 4. remote video transmission delay-although that transmission delay on any kind of network video server is inevitable, but different network video server delay values are different. Delay value or low will have a direct impact on .the effectiveness of digital control. Imagine, when the monitoring personnel in the monitoring center through the mouse to control the front camera head, in 5 seconds click five mouse clicks, and in the first ten seconds to see on the monitor for the first time, .click the PTZ control effect after that? because different frame rate transmission delay (the same product, the higher the frame rate, the lower the transmission delay), the conditions for the unity, compared to 25 frames / sec..